like they used alcohol and like they used cigarettes. however, the vast majority of people who use marijuana never go on to use cocaine and never go on to use marijuana. it's like worrying about motorcycle riding because discouraging bicycle riding. >> we're getting close to 50% of americans supporting this. >> there are three pieces of evidence. we've seen support for legalizing marijuana going from 36% years ago to 50% today. and the opposition dropped by the same amount. if you line up support for gay marriage and legalizing marriage it's the same tipping point. you see this problem of over- over-incarceration. you have many say enough already already. we need to redirect resources. we don't have the money. thirdly, you have not just former presidents but current presidents in guatemala and the president of uruguay said let's legalize marijuana there and it's begin to memorialate to people in the united states and washington. >> i remember having a conversation with president calderÓn in mexico city, an interesting private conversati